At our cert for awhile will williams was adding paraffin to the handles - that did reduce friction - alas, in the sun it also melted away rather quickly. but was nice while it lasted. I'm not sure if there was an official verdict on its use for the certs or not.

mc

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mc, begin2dig, b2d feed - subscribe to b2d by email
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....will happily do kb form checks and mobility assessments via webcam - PM if interested